Commissioning Experts Call
MAX IV is welcoming the submission of proposals for scientific experiments that will help in the commissioning of the BLOCH, FinEstBeaMS beamlines as well as additional functionality at the HIPPIE beamline. The main purpose of these experiments is to engage the scientific community with the beamline scientists of these beamlines for testing and commissioning these beamlines.
As these experiments will be for testing and to further the technical development of the new beamlines, please note that MAX IV cannot guarantee the full functionality of these beamlines. The beamtime scheduling for these commissioning proposals can be on very short notice and this beamtime can also be cancelled or rescheduled. As the beamlines are still under development, the quality of scientific data coming from these experiments cannot be guaranteed. Error finding, longer waiting times and non-smooth operation can be part of this beamtime.
The types of experiments that will be of most use for the beamline commissioning for the different beamlines are described below. Further information can be found at the specific webpages for the different beamlines.
The review criteria for these proposals will be the usefulness of the proposed experiments for the commissioning process of the respective beamlines as well as how these experiments will explore the possible technical opportunities of the beamlines. A technical review will check whether the experiments are feasible. Technical expertise of the proposers and a well developed experimental plan will also be reviewed and will be an asset. The proposals are submitted through our DUO system. Please note to select “normal” as proposal type and “commissioning” as research area within the proposal system. The template for the “Description of the experiment proposed” that should be used is: MAX IV_COMMISSIONING_template.rtf
The deadline for this submission was Friday the 6th of July 2018. The review took place over summer and a decision and notification were taken in August/September 2018.
We encourage all applicants to discuss the proposed experiments with the beamline staff before submitting the proposal and well in advance of the deadline for submitting proposals.
The BLOCH beamline consists of two branchlines, and is dedicated to high resolution photoelectron spectroscopy, encompassing angle-resolved (ARPES), spin resolved (spin-ARPES) and core-level spectroscopy.
Currently available are the following items:
- Deflector based angular scans
- Photon polarisation: Horizontal and vertical polarisation
- Cooling with LN2 and LHe
- Sputter anneal
- Direct and indirect heating of samples
Work in progress
- Photon energy calibration
- Automated photon energy scans
- Automated angular scans by moving manipulator.
- Cleaving hard samples
Expertise for the following tasks is looked for in this call:
- Comparison of manipulator rotation scans and DA30 deflector scans
- Higher order contamination and its suppression using various tools at the beamline (QEPU,beamline baffles, and possibly also gasfilter.
- Evaluation of ultimate energy resolution of the analyser, and in particular finding and eliminating spurious noise sources.
- Evaluation of polarization purity (horizontal, vertical) and (possibly circular –if commissioned)
- In general advice on making the beamline and end station user friendly
FinEstBeAMS at the MAX IV 1.5 GeV storage ring is a materials and atmospheric science beamline dedicated to provide high quality radiation with precisely controlled and widely variable parameters for a broad range of research. Beamline has two end stations – one for electronic structure studies of free atoms, molecules, clusters and atmospheric particles in gas phase and another for photoluminescence studies of solids.
Expertise and experience relevant to the following issues are of particular importance for the FinEstBeAMS commissioning:
- Optimization of beamline performance for synchrotron based photoluminescence studies.
- Optimization of beamline performance for synchrotron based gas-phase XPS and TOF investigations.
- The gas-phase end station has multiparticle coincidence capability. Testing PEPICO capability is part of the commissioning call.
HIPPIE is a state-of-the-art beamline for Ambient pressure X-ray photoelectron spectroscopy (APXPS). The combination of the exceptional performance of the 3 GeV ring with an innovative design of the experimental station results in a beamline which is outstanding not just in a pure electron spectroscopy context, but which also significantly expands the scientific issues that can be addressed.
The beamline is offering two setups during the expert call:
- Electrochemical / Liquid cell with the possibility of installation of a liquid microjet
The group that will conduct the experimental work at the beamline should have documented expertise in one following area IN ADDITION to AP-XPS:
- (in-vacuum) IRRAS
- Liquid jet
- Spectroscopy from liquids e.g. static droplets, dip-and-pull, flow cells, etc
- Other expertise or experience which might be of great importance to commissioning and developing either in-vacuum IR spectroscopy or electron spectroscopy at the solid-liquid and liquid-gas interfaces